Lamp



FIG. 1 is a front left perspective view of a lamp, showing my new design;

FIG. 2 is a front elevation view thereof, the rear elevation view being a mirror image;

FIG. 3 is a right side elevation view thereof, the left side elevation view being a mirror image;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The short broken lines represent environmental subject matter and form no part of the claimed design. The short-short-long broken lines represent interior contours for the lamp's transparent shade and features of the lamp as viewed through the transparent shade. 

CLAIM The ornamental design for a lamp, as shown and described. 